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Add deprecation warnings for policies CMP0065 and below

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The OLD behaviors of all policies are deprecated, but only by
documentation.  Add an explicit deprecation diagnostic for some policies
to encourage projects to port away from setting policies to OLD.
This commit is contained in:
Brad King
2019-01-11 14:10:15 -05:00
parent 5a283b79e5
commit 6845e2559d
3 changed files with 23 additions and 1 deletions
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8
Help/release/dev/deprecate-policy-old.rst Normal file
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@@ -0,0 +1,8 @@
deprecate-policy-old
--------------------
* An explicit deprecation diagnostic was added for policies ``CMP0064``
and ``CMP0065`` (``CMP0063`` and below were already deprecated).
The :manual:`cmake-policies(7)` manual explains that the OLD behaviors
of all policies are deprecated and that projects should port to the
NEW behaviors.

6
Source/cmMakefile.cxx
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@@ -4232,7 +4232,11 @@ bool cmMakefile::SetPolicy(cmPolicies::PolicyID id,
// Deprecate old policies, especially those that require a lot
// of code to maintain the old behavior.
if (status == cmPolicies::OLD && id <= cmPolicies::CMP0063) {
if (status == cmPolicies::OLD && id <= cmPolicies::CMP0065 &&
!(this->GetCMakeInstance()->GetIsInTryCompile() &&
(
// Policies set by cmCoreTryCompile::TryCompileCode.
id == cmPolicies::CMP0065))) {
this->IssueMessage(cmake::DEPRECATION_WARNING,
cmPolicies::GetPolicyDeprecatedWarning(id));
}

10
Tests/RunCMake/CMP0064/CMP0064-OLD-stderr.txt Normal file
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@@ -0,0 +1,10 @@
^CMake Deprecation Warning at CMP0064-OLD.cmake:1 \(cmake_policy\):
The OLD behavior for policy CMP0064 will be removed from a future version
of CMake.
The cmake-policies\(7\) manual explains that the OLD behaviors of all
policies are deprecated and that a policy should be set to OLD only under
specific short-term circumstances. Projects should be ported to the NEW
behavior and not rely on setting a policy to OLD.
Call Stack \(most recent call first\):
CMakeLists.txt:3 \(include\)$